login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A318549 Number of nX5 0..1 arrays with every element unequal to 1, 2, 4 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1
3, 21, 44, 219, 842, 3172, 12073, 49181, 191426, 766695, 3049529, 12107020, 48250678, 192019906, 764373285, 3043515961, 12116244368, 48238515390, 192056199827, 764631673154, 3044276102274, 12120342053719, 48255337743357 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A318552.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=5

..0..1..1..0..1. .0..1..1..1..1. .0..1..0..1..1. .0..1..1..1..1

..1..1..1..1..1. .1..0..1..0..1. .1..1..1..1..0. .1..1..0..0..0

..0..1..1..0..0. .1..1..1..1..1. .1..0..1..1..1. .1..1..0..0..1

..1..1..1..0..0. .0..1..1..0..1. .1..1..1..0..1. .0..0..0..0..0

..0..0..0..1..0. .1..0..1..1..0. .1..0..1..1..0. .0..1..0..0..1

CROSSREFS

Cf. A318552.

Sequence in context: A056387 A056377 A146712 * A217000 A034186 A318211

Adjacent sequences:  A318546 A318547 A318548 * A318550 A318551 A318552

KEYWORD

nonn

AUTHOR

R. H. Hardin, Aug 28 2018

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 9 19:47 EDT 2021. Contains 343746 sequences. (Running on oeis4.)